A randomized 25 question test from a pool of 761 questions, good luck!
Which answer below is best described as the RS-232 standard for voltage range to transmit a "Space"?
The limits of a OUT parameter status field has several different classifications. Which of the classifications below can be described as the indication of a parameter within the set range?
In Modbus, data is read, and written in various memory ranges. Which of the answers below best represents the data type that a input registers would use?
There are numerous threats to the security of a DCS. Which of the security measures below would used be to prevent unauthorized changes from an operator?
The design and utilization of a SCADA system requires the approval of several layers of government. Which of the terms below would best be described as the framework for the integration of systems network layers?
Each network layer for a DCS has it's own specialized equipment or software. Which of the layers below would make use of firewall in its connection to the control network?
In Modbus, data is read, and written in various memory ranges. Which of the answers below best represents the data type that a coils would use?
Communication technology is generally specific to a type of area network. Which of the area networks below would IDSN and VPN be used primarily?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to write the contents of a holding register to the slave device
IPv4 has several distinct classifications. Looking at the answers below, choose the one that contains all of the classifications.
The OSI model describes how a network should be arranged. Which of the layers below defines the media access method and the message frame structure?
Which of the topology connections is the most typical for a HART communication device?
Digital signals are, either specific or transitory, voltage levels represent states of logic. Which of the signal encoding methods below uses voltage transitions to represent logic states?
The term "TDM" relates best to which of the answers below?
The numerous tasks that are accomplished at the same time in a DCS, is a result of the configured software programs that it has . Which of the software programs below will governed by IEC-61131-3?
A DCS collects a lot of data during the course of operating. Which of the answers below best represents the number of databases commonly used in a DCS?
Modbus protocol can implement data encapsulation over IP based networks. Which of the statements below is an disadvantage of using encapsulation?
There are several layers in the DCS architecture. Which of the levels below would have direct control over the ESD system?
A media access control address is the name of the physical address that the Ethernet uses. Which of the answers represent the number of bytes that make up this MAC?
SCADA control systems are similar to other control system, but the components for a SCADA system vary slightly. Which of the components below would be designed to reduce transmission of the records of alarms and/or events?
In the protocol specifications of Modbus, there are 5 and 6 digit addresses, each address starting with a specific number for the register type. Which number below starts the input registers addresses?
There are several fields in an Ethernet message frame structure. Which of the answers represent the total amount of fields in an Ethernet message frame?
Ethernet network components provide several ISO layers of transmission control. Which of the network components below has transmission controls only on the ISO physical and data link layers?
A defined area of geographical coverage is commonly called an area network. Which of the area networks below is best known for the being smallest power consumer, with the fastest data transmission rates?
Which of the error detection methods below best relates to an "effectiveness of 90%"?